COLLIN— DIPTERA, PHORID^ FROM SEYCHELLES 111 



pair of supra-antennal bristles much smaller and rather closer together than the upper 

 pair, antennae very small, arista long and distinctly pubescent, palpi dirty yellow. 



Thorax with one pair of dorso-central bristles, scutellum paler than the thorax with 

 four distinct strong bristles, mesopleura bare. 



Abdomen dull blackish-brown, hind margins of segments often paler, terminal lamellae 

 yellow, second segment at basal corners with 2 — 3 strong bristles somewhat as in ruji- 

 cornis Mg., sixth segment with several long hind-marginal bristles. 



Legs brownish-yellow, front legs paler, ciliation beneath hind femora at base consisting 

 of about 6 — 7 not very long curved hairs, cilia of hind tibiae distinct, longest about the 

 middle of tibia. 



Wings (fig. 5) with a brownish tinge, costa with a short fringe and reaching beyond 

 wing middle, subcostal vein ending about midway between humeral cross vein and end of 

 costa, fork small and acute, thin veins dark and distinct. Halteres yellow with brown 

 stems. 



Length about 1"75 mm. 



Locality. Silhouette : low coconut-planted country near the coast, Pointe Etienne, 

 17. IX. 1908. Mahe : high damp forest between Trois Freres and Morne Seychellois, 

 about 1500 — 2000 feet, 9. and 10. XIL 1908; high forest of Morne Blanc and Pilot, 

 X.— XL 1908; Morne Seychellois, over 1500 feet, 4. IL 1909; Mare aux Cochons 

 district, about 1500 feet, 26. L— 2. IL 1909; Cascade Estate. Eight females. 



Note. $. What might be the male of this species is represented by a single 

 specimen from Mahe, high forest of Morne Blanc and Pilot (No. Ill); it resembles the 

 female in general coloration, venation, arrangement of frontal bristles and cilia to hind 

 legs, but there are only two distinct scutellar bristles, the basal pair being very minute, 

 and the halteres are darker. The h3rpopygium is small and greyish in contrast with the 

 duU black abdomen and bears a single long bristle each side, the long anal organ is pale 

 yellow. 



9. Aphiochceta viduata, n. sp. (Plate 5, fig. 6). 



Beddish-black species, scutellum with four bristles, mesopleura bare. 



%. Head black ; frons about as broad as long, dull ; upper pair of supi-a-antennal 

 bristles strong, under pair minute ; antennae small, reddish-brown, arista distinctly 

 pubescent ; palpi and proboscis yellow. 



Thorax black but with a distinct tendency at times to a reddish tinge ; scutellum 

 with four bristles, the basal pair weaker than the apical pair ; pleurae distinctly reddish, 

 palest towards the coxae ; mesopleura bare. 



Abdomen dull black sometimes with a reddish tinge. 



Legs yellow, middle coxae with a dark streak behind, hind legs darkened about the 

 tips of femora and tibiaj, cilia on hind tibi;e distinct but not strong. 



Wings (fig. fi) very faintly brownish. Halteres dirty yellow. 



Length 1 — 1-25 mm. 



